Case sensitivity in external function names

When you reverse-engineer and then regenerate a PowerBuilder application, an external function with a case-sensitive name such as GetCurrentDirectoryA fails. The workaround is to specify an alias for the function, for example:

public function ulong GetCurrentDirectoryA (ulong textlen, ref string dirtext) library “KERNEL32.dll” alias for "GetCurrentDirectoryA;ansi"

[CR 358442]